| 摘要 |
PROBLEM TO BE SOLVED: To provide a power storage device in which positional deviation of a first electrode and a second electrode in the direction along the surface can be prevented without increasing the electrical resistance in a tub, and to provide a manufacturing method of an electrode assembly.SOLUTION: In an electrode assembly 14 of a secondary battery 10, positive electrode collector tubs 31 and negative electrode collector tubs 32 are laminated on the electrode assembly 14, respectively, and a positive electrode conductive member 35 and a negative electrode conductive member 36 are welded to the outermost positive electrode collector tub 31 and the negative electrode collector tub 32 in the lamination direction. Through holes 31a, 32a penetrating in the lamination direction are formed closer to the tip side than the position where each conductive member 35, 36 is connected electrically, in all the positive electrode collector tubs 31 and all the negative electrode collector tubs 32 thus laminated. |
